The CD700 from Midwest Fasteners is designed specifically for the insulation contractor. In fact, it is one of the most powerful capacitor discharge units available today. The CD700 features a separate cup head weld pin contact mode that welds to materials as thin as 20 gauge – without fear of burn through. A unique feature is the 84,000 to 168,000 MFD variable capacitance high/low power range switch which handles the toughest applications. The high power range helps eliminate surface preparation when welding “Power Tip” pins from Midwest Fasteners.

Compliances & Standards
A-A-59331 (Military Specification: Stud Welding Systems with DC Integral Power Source and Control Unit)
Unit of Measure

Key Features

Weld System

N/A CD 700

Maximum Weld Diameter

N/A M10

Maximum Weld Diameter (Fraction)

N/A 3/8 in

Maximum Weld Diameter (Decimal)

N/A 0.375 in

Minimum Weld Length

N/A 6 mm

Weldable Material

N/A Aluminum Mild Steel Stainless

Incoming Power (Voltage)

N/A 115 V

Special Features Available

N/A Cuphead (Mini-Cup) Pins


Minimum Weld Length (Decimal)

N/A 0.250 in

Minimum Weld Length (Fraction)

N/A 1/4 in


N/A 13-1/2 in


N/A 21 in


N/A 9 in


N/A 66 lb

Weld Rate

N/A Up to 14/min

Pin/Stud Range

N/A 14 GA. thru 3/8" Dia. Weld Base

Weld Voltage (DC)

N/A 34 to 175 V

High Capacitance

N/A 168,000 µF

Low Capacitance

N/A 84,000 µF

Weld Mode

N/A Contact Cuphead

Stud to Base Weld Area

N/A No Special Requirements

Secondary Features

Backside Marking on Thinner Material

N/A Unacceptable

Minimum Material Thickness

N/A 0.03125 in (22 gauge) 0.6 mm (22 gauge)

Weld Penetration

N/A Surface Weld, Fail-in-fastener Minimum

Power Requirement

Voltage (AC)

N/A 115 V


N/A 30 A


N/A 60 Hz

Weld Gun (CD-2P Precision)

Weight (Not Including Cable)

N/A 1-1/2 lb

Size (LWH)

N/A 6-1/2 x 2 x 5-3/4 in


N/A High strength impact-resistant polycarbonate


Ground Cable

N/A #1 x 15 Ft. (One each)

Gun Extension Set

N/A #1 x 18/2 x 35 ft (Direct to Gun)

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